Newsletter

N&V February 2009

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Features

FPGAs at the Command Lineby Bob Smith The problem with using Field Programmable Gate Arrays is that you have to learn a design language and then set up a fairly complex development environment to write programs in. That problem is addressed here.

Power MOSFETs Part 2by Gerard Fonte This time, we'll build two projects. The first is a transformerless voltage doubler that takes a DC voltage from 12 to 30 volts and doubles it. Unlike most other voltage doubler circuits, this design can supply amps of current. The second project uses a power MOSFET in a linear (rather than switching) application.

A Touch of Spice Part 3by Peter Stonard In this final part, take a look at oscillator circuits that create their own signal during simulation.

How To: A Guide to Solderingby James Antonakos Never soldered before? Now you can learn how!

Projects

Garage Access Goes Digital by Jay Carter Keypad access is a great convenience and with this unit you can trigger activiation of up to two.

High Resolution Time-Lapse Movies Using a Still Camera by Balakumar Balasubramaniam CamTim is a digital hack to convert your camera into a high-res time-lapse camcorder.

Makin’ MIDI with mistrIXG by Steve Russell mistaIXG is a USB connected, PIC-basd synthesizer that will help you turn your computer into a music machine.

Columns

PICAXE Primer by Ron HackettImplementing a serial data link with the IR multi-board This month, we're going to resolve the problem of the missing keypresses that we had last time with our SIRC system and then move on to accomplishing our final goal for the IR Multi-Board.

Open Communication by Louis E. FrenzelConverting To Digital TV Fun with converter boxes and antennas.

Near Space by L. Paul VerhageThe Great Plains Super Launch 2008 GPSL — or The Great Plains Super Launch — is the largest annual amateur near space launch, and takes place every summer. This year, Near Space Ventures and CAP'n'Space hosted GPSL in Liberty, MO on August 1-2.

Personal Robotics by Vern GranerPneumatics In Robotics Let's dip our toe into some possibly unfamiliar waters as we explore the world of electronically controlled pneumatic actuators for hobby robotic and animatronic mechanisms.